LED Indicators, Smoke Sensing Chamber Operation

Operation

LED Indicators

This smoke alarm is equipped with a red LED indicator. The red LED is located under the test button and has several modes of operation.

Standby Condition The red LED will flash every 30–40 seconds to indicate that the smoke alarm is operating properly.

Alarm Condition When the alarm senses particles of combustion and goes into alarm, the red LED will flash rapidly (once every two seconds). The rapid flashing LED and temporal alarm will continue until the air is cleared.

Hush Condition The red LED will flash every 2 seconds as long as the alarm is in Hush® mode.

Low Battery Condition The red LED will be accompanied by an audible chirp. Replace the battery when this condition occurs.

Alarm Memory	This smoke alarm is equipped with an
	alarm memory feature which produces
	a rapid chirping sound when the test
	button is pushed. This sound indicates
	that the alarm has been activated
	since it was last tested. Releasing
	the test button clears the memory.
	If the alarm memory sound is heard,
	release the test button and press the
	test button again to enter the normal
	test mode.

Smoke Sensing Chamber Operation

The alarm will “chirp” if any of the components in the smoke sensing chamber fail. This chirp will occur between the flashes of the red LED indicator light. If the “chirp” occurs at the same time as the red LED flash, see Battery Replacement section for more information.